One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,9,10)(4,7,12,14)(11,13,15,16)(17,18,23,21)(19,25,20,24)(22,29,30,26)(27,31,28,32)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,45)(46,48)(1,2)(3,6)(4,7)(5,8)(9,10)(11,13)(12,14)(15,16)(17,19,23,20)(18,24,21,25)(22,27,30,28)(26,31,29,32)(33,35)(34,40)(36,43)(37,39)(38,42)(41,47)(44,48)(45,46)(3,9)(4,12)(6,10)(7,14)(18,21)(22,30)(24,25)(27,28)(34,38)(35,37)(41,44)(43,46) involution — undirected(1,2)(3,10)(4,7)(5,8)(6,9)(11,16)(12,14)(13,15)(17,20,23,19)(18,25,21,24)(22,28,30,27)(26,32,29,31)(33,36,39,45)(34,41,38,44)(35,43,37,46)(40,47,42,48)(1,3)(2,6)(4,11)(5,9)(7,13)(8,10)(12,15)(14,16)(17,21,23,18)(19,24,20,25)(22,29,30,26)(27,31,28,32)(33,37,39,35)(34,42,38,40)(36,43,45,46)(41,47,44,48)(1,4,5,12)(2,7,8,14)(3,11,9,15)(6,13,10,16)(17,22)(18,26)(19,27)(20,28)(21,29)(23,30)(24,31)(25,32)(33,38,39,34)(35,42,37,40)(36,44,45,41)(43,48,46,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.